You mean, a policy that makes sure those who take the kids are capable of caring for them? Making sure they are legal citizens themselves? Making sure they aren't for example human trafficers etc just randomly claiming kids? Oh the horror, absolutely horrid stuff this. How dare anyone think of doing thorough checks on the adults applying to take them to make sure the kids aren't sold as sex slaves.
Of course days have increase... kids entering has doubled in august alone, system is overloaded, they need more cash to expand it... thus, shifting the funds. You said they went with b. keep kids locked away from their parents.... 400. So, 400 are given to parents right now. Now what? Nothing changes, still have 12.5k that need to be housed, clothed and fed, still need to find homes for them, hopefully some may have family that can be tracked down, but that alone is a nightmare.